Heat is a form of energy that flows from a hotter object to a cooler one. It is measured in joules or calories. Temperature is a measure of how hot or cold an object is and is measured using thermometers in degrees Celsius, Fahrenheit, or Kelvin. Heat causes various changes in matter, such as expansion, change of state, and change in temperature. Solids, liquids, and gases expand when heated and contract when cooled. This Quiz on Heat for Class 8 examines the methods of heat transfer and their real-world applications in detail. Heat transfer occurs through three methods: conduction, where heat passes through a material without the movement of the material itself; convection, where heat is transferred through the movement of fluids; and radiation, where heat travels in the form of electromagnetic waves without needing a medium. Understanding heat helps students learn about thermodynamics, weather phenomena, and the functioning of various thermal devices. Answer these 10 questions to assess your understanding.
